
Veriphone
Numverify
RealPhoneValidation
Textmagic
Clearout Phone
Nexmo
RealValidito
Twilio
Markdrop
BugHerd
Pastel
Webvizio
Never miss a sale opportunity because your lead's phone number is missing a prefix or contain extra characters. Whether you are calling or SMSing your leads, use Veriphone to clean your phone number list and make it ready for any SMSing or dialing tool.
Veriphone
MarkdropMarkdrop's answer:
Markdrop combines powerful visual feedback, screen recording, and developer-ready bug reporting into a single, lightweight tool that feels invisible until you need it. Unlike bloated alternatives, Markdrop is fast, easy to integrate, and built for modern teams who care about speed and clarity with no Chrome extension or signup friction required.
Markdrop's answer:
Affordable, transparent pricing: Markdrop offers all the core features at a fraction of the cost of tools like Markup.io or Pastel.
Designed for devs and designers: Every comment can include logs, screen recordings, and environment data ready for developers to act on.
No friction for users: Share a link and anyone can leave feedback. No browser extensions, no accounts, no hassle.
Fast and privacy-respecting: Lightweight script, GDPR-compliant, and zero tracking bloat.
All-in-one: Combines comments, annotations, bug reporting, and async video so teams donโt need 3 different tools.
Markdrop's answer:
Markdrop is built for:
Founders and indie builders who want fast feedback without complex tools
Designers and PMs collecting client or stakeholder feedback
Developers who want bug reports with context, not vague screenshots
Agencies delivering websites and apps that need client review In short, itโs for lean product teams who value clarity and speed.
Markdrop's answer:
Markdrop was born out of frustration. As a solo founder building multiple products, I (Manuel) kept running into the same feedback pain, long email chains, vague bug reports, and overpriced tools that did too much or too little. So I built what I needed: a clean, no-fuss tool to drop comments directly on a site, see what users saw, and get back to shipping.
Markdrop's answer:
Which are the primary technologies used for building your product?
Frontend: Svelte 5 Backend: Cloudflare Workers, D1, and Durable Objects Database: Wrangler DB (D1) DevOps/Infra: Cloudflare Pages + R2 for static assets and file storage
Markdrop's answer:
Indie founders using Markdrop to launch and iterate faster
Agencies working with clients.
YC applicants using it to get fast design review
No-code builders collecting client feedback inside Webflow
Internal product teams replacing Slack screenshots with structured feedback
Based on our record, Veriphone seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Https://veriphone.io If I remember correctly if the carrier is not listed it is most likely a VoIP number. Not much you can do on your end. Source: almost 5 years ago
Veriphone.io โ Global phone number verification in a free, fast, reliable JSON API. 1000 requests/month. - Source: dev.to / about 5 years ago
Numverify - Global phone number validation and lookup API
BugHerd - BugHerd: The Website Feedback Tool for Agencies
RealPhoneValidation - Realtime API and Batch Phone Validation
Pastel - Sticky note-based feedback collection tool for live websites
Textmagic - Send time-sensitive texts and email campaigns, track results, and manage your business conversations on the most popular channels.
Webvizio - This free website feedback tool & website review software allows managers and teams to collaborate on website revisions in real time. Join for free now!